Not too useful, but still classic cool. THis glitch will make it so when you hold the left trigger to aim with a gun you'll also have the grenade beam aim, as well.
To do this...
1) Stand on top of Frags
2) Get ur smoke out and Press X + B at the same time,
3) Don't change to any weapon , if grenades are invisible just aim , if you see the little beam, then change to any gun and try it.
